In practical, there often exist structural uncertainties, measurement errors, and the aerodynamic perturbations in the flight control systems of the hypersonic vehicles (HSVs). The control performance degradation and loss of stability may be induced if the coupled multisource uncertainties are ignored. To address this problem, this paper develops a novel multivariable robust adaptive sliding mode control structure. Benefiting from the second-order characteristics of the super-twisting controller, the uncertainties from the unknown nonlinearities and the lumped disturbances can be surmounted respectively. Meanwhile, the finite time convergence can be obtained and the continuity of the control signals can be guaranteed. Moreover, to cope with the unknown upper bounds of lumped uncertainties, a novel update law is developed by analyzing the connection between the control gains and the boundaries. Moreover, for the purpose of compensating the mismatched uncertainties in HSVs, a robust disturbance observer is introduced into the sliding surface such that the sliding-mode dynamics are stable with ${\mathcal{L}}_2-{\mathcal{L}}_{\infty }$ performance. The closed-loop control system is proved to be globally ultimately stable. Simulation results indicate that the proposed control scheme works well compared with the existing methods.

在实践中，高超声速飞行器（HSV）的飞行控制系统中通常存在结构不确定性，测量误差和空气动力学扰动。如果忽略了耦合的多源不确定性，则可能导致控制性能下降和稳定性降低。为了解决这个问题，本文提出了一种新颖的多变量鲁棒自适应滑模控制结构。得益于超扭曲控制器的二阶特性，可以分别克服未知非线性和集总扰动带来的不确定性。同时，可以获得有限的时间收敛，并且可以确保控制信号的连续性。此外，为了应对不确定的不确定性上限，通过分析控制增益与边界之间的联系，开发出一种新颖的更新定律。此外，为了补偿HSV中不匹配的不确定性，将鲁棒的扰动观测器引入到滑动表面中，从而使滑模动力学稳定。${\mathcal{大号}}_2-{\mathcal{大号}}_{\infty }$性能。事实证明，该闭环控制系统在全球范围内都是最终稳定的。仿真结果表明，所提出的控制方案与现有方法相比效果良好。